AMSOIL Synthetic Motorcycle Oils have been reformulated
with new high performance additive technology that provides even
greater multi-functional benefits for the special requirements
of motorcycle applications. These independent and exclusive new
AMSOIL formulations provide second-to-none viscosity protection
for hot-running American and foreign motorcycle engines, transmissions
and primary chaincases. Performance specifications include: API
SG, SL/CF; JASO MA; API GL-1
AMSOIL Synthetic 10W-40 Motorcycle Oil (MCF)
is a premium oil designed for those who demand the absolute best
lubrication for their motorcycles. AMSOIL MCF is the result of
extensive research, and it is specially formulated to excel in
all areas unique to motorcycles, including high engine RPM, wet
clutch lubrication, extreme pressure regions of gears and rust
common to short drives and storage.
AMSOIL MCF is multi-functional and fulfills the
requirements of both domestic and foreign motorcycles. It outperforms
other conventional and synthetic motorcycle oils.
AMSOIL, the leader in synthetic lubrication,
produced the worlds first API qualified synthetic motor
oil in 1972. Trust the extensive experience of AMSOIL The First
in Synthetics® to do the best job protecting your motorcycle.
Reduces Friction, Heat and Wear
In high heat conditions, engine protection is
not sacrificed with AMSOIL Synthetic Motorcycle Oil. It has the
best high temperature film strength (see High Temperature Viscosity
Protection graph below) of all oils tested and contains a heavy
treatment of anti-wear additives to reduce wear regardless of
the operating conditions (see Wear Comparison graph at right).
AMSOIL MCF is thermally (heat) stable and contains maximum levels
of oxidation inhibitor additives. It is extremely resistant to
breakdown and engineered to prevent damaging sludge and carbon
deposits for superior engine cleanliness.
10W-40 Motorcycle Oil
High Temperature Viscosity Protection Higher values reflect better film strength
ASTM Test Method D-4683 March 16, 2005
10W-40 Motorcycle Oil
ASTM Test Method D-4172 March 16, 2005
Provides Extreme Pressure Quality Protection
With AMSOIL MCF, there is no need for separate
transmission lubricants. It is absolutely shear stable and will
not thin out from mechanical activity. AMSOIL MCF performs like
a gear lube without the negative effects of extreme pressure additives.
In the FZG gear test, AMSOIL MCF achieved a perfect score with
a zero wear rating (see photos below).
FZG Gear Test
(ASTM D-5182) AMSOIL 10W-40 (MCF)
FZG Gear Test
(ASTM D-5182) Motul 300 V 10W-40
Delivers Superior Rust Protection
Motorcycles are prone to rust from storage, humidity
and short drives. Rust can cause major damage such as uncontrolled
wear, compression loss and blow-by. Good rust protection, however,
comes by design and is not natural to engine oils. Unlike many
motorcycle oils, AMSOIL MCF contains special anti-rust agents.
It passes the ASTM D-1748 humidity cabinet rust test and clearly
demonstrates superior rust protection (see photos below).
Rust Test ASTM D-1748
AMSOIL 10W-40 (MCF)
Rust Test ASTM D-1748
Castrol GPS 10W-40
Provides Excellent Wet Clutch Performance
AMSOIL MCF contains no friction modifiers and
promotes smooth shifting and positive clutch engagement. AMSOIL
MCF controls heat and prevents slippage and glazing, and its high
TBN resists acids that can degrade clutch material, helping improve
AMSOIL Synthetic 10W-40 Motorcycle Oil is recommended
for liquid or air-cooled 4-stroke engines. It meets SAE 80W/90,
API GL-1 gear oil requirements and is recommended for transmissions
on both 4- and 2-stroke motorcycles. AMSOIL MCF is recommended
for Honda®, Kawasaki®, Yamaha®, Suzuki®, BMW®,
Husqvarna®, KTM® and other motorcycles where 10W-40 or
20W-40 engine oils or SAE 80W/90, GL-1 gear oils are used. Not
recommended for shaft drive hypoid gears or where an API GL-4
or GL-5 gear oil is required.
AMSOIL Synthetic 10W-40 Motorcycle Oil is compatible
with conventional and synthetic motor oils; however, mixing oils
may shorten the oil life expectancy and reduce the performance
benefits. AMSOIL does not support extended drain intervals where
oils have been mixed. Aftermarket oil additives are not recommended
for use with AMSOIL motorcycle oil.
For on road use in engines and transmissions,
change AMSOIL MCF and AMSOIL engine oil filter at twice the motorcycle
manufacturer change interval or one year, whichever comes first.
Change other brand oil filters at standard intervals.
For off road use in engines and transmissions,
change AMSOIL MCF at the standard motorcycle manufacturer change
For racing or in engines modified from the original
factory design, no change interval recommendation is made. Oil
changes are at the owners discretion.
TYPICAL TECHNICAL PROPERTIES
SAE 10W-40 Synthetic Motorcycle Oil
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
Viscosity Index (ASTM D-2270)
CCS Viscosity (ASTM D2602)
6794 @ -25°C
Pour Point °C (°F) (ASTM D-97)
Flash Point °C (°F) (ASTM D-92)
High Temperature/High Shear
Viscosity @ 150°C , 1.0 x 106 s-1 (ASTM
D 4683), cP
Four Ball Wear Test (ASTM D-4172
@ 40 kgf, 150°C, 1800 rpm, 1 hour), Scar in mm
Noack Volatility, % weight loss (g/100g) (ASTM
Total Base Number
Foam (ASTM D-892, Sequence I,
II & III
Harley Davidson Motorcycles
requiring 20W50 lubricant; Harley Davidson part numbers 99903-93
and 99896-88, use the AMSOIL High Performance Synthetic 20W-50
Motorcycle Engine Oil, product code AMV.
Transmission requiring 75W90 lubricant; Harley Davidson part numbers
99892-84 and 98853-96, use the AMSOIL Series 2000 Synthetic 75W90
(AGR/TGR) Gear Lube, product code TGR.
Chain Case Oil (primary) lubricants requiring 10W40; Harley Davidson
part number 99887-84, uses the AMSOIL High Performance Synthetic
10W40 Motorcycle Engine Oil, product code AMF.
The exception is the Sportster. It has two oil reservoirs instead
of three and uses the same oil in both reservoirs. Use AMSOIL
20W50 Synthetic Engine Lubricant in both reservoirs, product code
Note: The AMSOIL 20w50 (AMV) and 10W40 (AMF) Motorcycle Engine
Oils do not contain friction modifiers and meet Harley Davidson
specification for the wet clutch system.
Harley-Davidson forks that recommend type "E" or "B" fork oils,
use the AMSOIL Shock Therapy Suspension Fluid, product code STM
Harley Davidson air filter part numbers, 2900252, 29002-52A, 29002-57,
29002-58, and 29036-56 uses the AMSOIL, product code TS-77.